Does a tuned infrared-gating thermostat survive an actuation lag and a cost per switch?

What it found

A stylised, preliminary follow-up to garment-twonodeheld. The skin-temperature gate band is retuned by exhaustive grid search for each actuation lag (0, 2, 5, 10 min) and each cost per switch (0, 0.01, 0.03 C), then scored on held-out rooms. A 10 min lag cuts the tuned gate’s gain over never switching from 0.23 to 0.15 C (“between” rooms, this repository’s choice set). A switch penalty widens the band and removes the chatter. The tuned band is not always better: under the reference choice set it loses to the untuned band by up to 0.035 C in 3 of 24 cells, and once to never switching (0.052 C). Six training and eight held-out scenarios, assumed lags and penalties, one model; no real fabric or person.

A figure from its own output

Paper, code and results

• README and method
• Experiments and results
• Code
• Tests

More in Engineered clothing

• Does a proportional infrared-gating textile beat the on/off thermostat gate?A proportional infrared-gating transmittance against the tuned on/off thermostat gate: a negative result, within 0.010 C in every cell because the tuned ramp collapses to nearly on/off, and a softer ramp costs 0.02 to 0.07 C (stylised).
• At what switching penalty does a proportional infrared gate beat the on/off thermostat gate?Prices actuation in equal units (one full close-open swing = 1) and asks when a proportional infrared gate beats the on/off gate: it wins in 52 of 80 held-out cells, by tenths of a degree at most, and the gain reverses in the outside rooms at the highest penalty (stylised, preliminary).
• Is the outside-room reversal of the proportional infrared gate a training-range artefact?Retunes both infrared gates on a wider set of rooms: the proportional gate's outside-room reversal is partly a training-range artefact
• Does an infrared-gating band tuned for one person and clothing level still work for other clothing and body sizes?Tunes both infrared gates on one person and clothing level and scores them on other clothing and body sizes; clothing matters, body size barely does
• How far is the thermostat-driven infrared-gating textile from the best possible switching schedule when the room temperature steps?A grid search for the best open/closed switching schedule under a room-temperature step shows one toggle suffices and the thermostat gate sits within 0.02 °C of it after a step up, but up to 0.11 °C after a step down (stylised).
• What does a degree of comfort cost in fabric?Joins garment-thermal comfort shifts to garment-teardown costs: only one fabric treatment helps in each scenario, levers combine sub-additively, and at assumed premiums a degree costs $0.5 to $19 on a replica trench but $3 to $114 on a designer one. Stylised; premiums assumed.

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Produced with AI assistance (Claude). Results are from the code in this repository and are simulated or stylised unless the abstract says otherwise; nothing here implies affiliation with or endorsement by any lab, researcher or company cited. MIT licensed.